CVE-2017-0883

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Summary

CVECVE-2017-0883
StatePUBLISHED
Assignerhackerone
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-04-05 20:59:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionNextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Risk And Classification

Primary CVSS: v3.0 6.4 MEDIUM from [email protected]

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem Types: CWE-275 | CWE-732 | CWE-275 Permission Issues (CWE-275)

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary6.4MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
2.0[email protected]Primary5.5AV:N/AC:L/Au:S/C:P/I:P/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
None

AV:N/AC:L/Au:S/C:P/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nextcloud Nextcloud Server 10.0.2 All All All
Application Nextcloud Nextcloud Server All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nextcloud Nextcloud Server affected All versions before 9.0.55 and 10.0.2 Not specified

References

ReferenceSourceLinkTags
HackerOne af854a3a-2127-422b-91ae-364da2661108 hackerone.com Third Party Advisory
advisory – Nextcloud af854a3a-2127-422b-91ae-364da2661108 nextcloud.com Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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